CN218445687U - Power battery shunt capable of changing flow direction of positive charges - Google Patents

Abstract

The utility model discloses a power battery diverter capable of changing flow direction of positive charges, which is provided with a diverter body, wherein the diverter body consists of a red copper area and an alloy area, the red copper area is positioned at two sides of the alloy area, a pair of protruding objects which are oppositely arranged are arranged in the red copper area, and the alloy area is positioned between the protruding objects; the PCB board is attached in the area between the protruding objects or the PIN needle is arranged in the red copper area between the protruding objects. Through constructing the 'buffer zone' formed by the protruding objects, before the high-speed current collides with the test point, through the design structure of the arc curved surface of the protruding objects, the original horizontal flowing direction of the current is changed, and the current smoothly passes through the alloy area along the curved surface of the arc, so that the resistance value test of the shunt is more stable, the precision can be controlled within 0.05 percent, the current shunt is suitable for the production of the shunt with high precision and low resistance value, and the product qualification rate is greatly improved.

Description

Power battery shunt capable of changing flow direction of positive charges

Technical Field

The utility model relates to a technical field of semiconductor manufacturing, concretely relates to can change power battery shunt of positive charge flow direction.

Background

In the field of semiconductor manufacturing technology, common combined shunts are different in appearance and internal structure, and the situation of performance parameters such as stability and precision of values of shunts can be determined due to different design structures. At present, a combined shunt usually adopts a three-piece welding material (red copper | alloy material | red copper), is formed by a die in a stamping way, is used as a measurement sampling point of the shunt at a certain distance from two sides of the alloy material in a mode of welding a PCB patch at a high temperature and installing a PIN needle, and is influenced by a welding pool of the three-piece welding material and the performance of the material, and the test reading, the temperature coefficient and the surface temperature rise of the shunt have great difference. We know that: the current direction in the circuit starts from the positive pole of the power supply and returns to the negative pole of the power supply through the electric appliance, and the current at the test sampling point also flows at a high speed in the whole current flowing process, so that the resistance value of the shunt is always tested to bounce, the resistance value precision of the shunt is greatly reduced, and even the precision of the shunt with low resistance value can only stay at the precision of 5%.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can change power battery shunt of positive charge flow direction, the utility model discloses can solve because of the influence of the electric current of high-speed flow, the test resistance that causes is undulant, product resistance precision scheduling problem. Specifically, a protrusion is designed on the periphery of a test sampling point to form a buffer zone, the original horizontal flowing direction of current is changed through the design structure of the arc curved surface of the protrusion before a high-speed current impacts a test point, the current smoothly passes through an alloy area along the arc curved surface, meanwhile, the current flows slowly and greatly relative to other positions of the test sampling point semi-surrounded by the protrusion, so that the resistance value test of the shunt is stable, the precision can be controlled within 0.05%, the current shunt is suitable for the production of shunts with high precision and low resistance values, and the product percent of pass is greatly improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a power battery diverter capable of changing the flow direction of positive charges is provided with a diverter body, wherein the diverter body is composed of a red copper region and an alloy region, the red copper region is positioned on two sides of the alloy region, a pair of opposite protruding objects are arranged in the red copper region, and the alloy region is positioned between the protruding objects; the PCB board is attached in the area between the protruding objects or the PIN needle is arranged in the red copper area between the protruding objects.

The protrusion is arc-shaped.

It should be noted that the protrusion has a polygonal shape.

It should be noted that, a current surge buffer zone is formed in the region between the protrusions, so that the influence of high-speed flowing current on the product resistance or performance test is reduced.

The protrusion and the red copper region are of an integral structure.

The beneficial effects of the utility model reside in that:

1. the diverter main body and the protrusion structure are punched and formed at one time through a punching die, and the whole process flow is simple and efficient;

2. the test sampling point is set in a buffer area formed between the protruding objects, when current flows at high speed, the buffer area plays a role in protection, the flowing direction of the current is changed, the test sampling point is prevented from being impacted, and the stability of value taking is achieved;

in the buffer area of the protruding object, the shunt can be designed to be a PIN needle mounting structure or a PCB circuit board is pasted, and the type is diversified and practical and changeable.

Drawings

Fig. 1 is a schematic structural diagram of a PCB of the present invention;

fig. 2 is a schematic structural diagram of the PIN of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it should be noted that the following embodiments are based on the technical solution, and the detailed implementation manner and the specific operation process are given, but the protection scope of the present invention is not limited to the embodiments.

As shown in fig. 1 and fig. 2, the present invention relates to a power battery diverter capable of changing the flow direction of positive charges, which has a diverter body, wherein the diverter body is composed of a red copper region 1 and an alloy region 2, wherein the red copper region 1 is located at both sides of the alloy region 2, a pair of protrusions 3 is arranged in the red copper region 1, and the alloy region 2 is located between the protrusions 3; the PCB board is mounted in the area 5 between the protrusions or the PIN PINs are mounted in the area 4 of copper between the protrusions.

Furthermore, the protrusion of the present invention is arc-shaped. Such as a "crescent" shape.

Further, the protrusion of the present invention has a polygonal shape.

Further, the utility model discloses a by regional impact buffering area that is formed with the electric current between the protruding thing reduces because of the electric current that flows at a high speed, to product resistance or capability test's influence.

Furthermore, the protruding object and the red copper area of the present invention are integrally formed.

Examples

The manufacturing process of the utility model is as follows:

s1, firstly, testing the appearance, the size, the electrical property and the like of red copper and alloy, and sending the material to a to-be-welded area for later use after all the red copper and the alloy are qualified;

s2, fixing the material by using a tool, and adjusting the height and the position to ensure that the clamp and the feeder are in a horizontal straight line; vacuumizing equipment, adjusting the position of an electron gun, starting welding when the vacuum condition is achieved, simultaneously controlling the feeding speed, and checking the appearance and the welding strength after welding;

s3, fixing the welded strip on a die of a stamping machine, starting to stamp into single semi-finished main body products, and simultaneously stamping and forming the groove and protrusion structures of the PIN PINs;

s4, after stamping, the surface of the main body semi-finished product is stained with a lot of oil stains, the surface needs to be cleaned by hot water and an oil removing agent, and after cleaning and drying, the surface scratches are polished and polished by a polishing machine;

s5, fixing the semi-finished product of the main body through a tool clamp, connecting a resistance tester to test resistance, then repairing the resistance by polishing the intermediate alloy area, and after reaching the set resistance range of the resistance tester, automatically stopping a polishing probe and pushing out a repaired resistance product;

s6, performing secondary surface cleaning and steel needle barreling on the repaired product, removing burrs and attachments on the surface, and coating a layer of protective liquid to form a protective layer after cleaning;

s7, fixing the main body and the PIN needle through a tool clamp, and then forcibly pressing and deforming the bottom of the PIN needle by using a press machine, so that the bottom of the PIN needle is in an expansion mode, and the aim of riveting is fulfilled; or brushing a layer of solder paste on the shunt main body by an automatic chip mounter, pasting the PCB on the solder paste, and heating and welding the PCB by high-temperature reflow soldering;

s8, resistance full detection: connecting a resistance instrument, testing and sampling points are two PIN needles, and screening qualified products of resistance values;

s9, packaging and warehousing: and (5) carrying out appearance inspection on the product, randomly inspecting the electrical property according to a proportion, and packaging and warehousing the qualified product.

Various corresponding changes and modifications can be made by those skilled in the art according to the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.

Claims (5)

1. A power battery diverter capable of changing flow direction of positive charges is provided with a diverter body, wherein the diverter body is composed of a red copper region and an alloy region, the red copper region is positioned on two sides of the alloy region, and the power battery diverter is characterized in that a pair of oppositely arranged protruding objects are arranged in the red copper region, and the alloy region is positioned between the protruding objects; the PCB board is attached in the area between the protruding objects or the PIN needle is arranged in the red copper area between the protruding objects.

2. The power battery diverter according to claim 1, wherein the protrusions are rounded.

3. The power cell diverter according to claim 1, wherein the protrusions are polygonal in shape.

4. The power cell shunt for changing the flow direction of positive charges according to any one of claims 1 to 3, wherein a surge buffer zone for current is formed in the region between the protrusions, so as to reduce the influence of the current flowing at a high speed on the resistance value or performance test of a product.

5. The power cell diverter according to claim 1, wherein the protrusions are integrally formed with the copper regions.

Images